draper



(No Model.)

W. F. DRAPER. SPINDLE SUPPORT.

No. 484,356. Patented Oct. 11, 1892.

UNITED STATES PATENT OEEIcE.

VILLIAM F. DRAPER, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO GEORGE DRAPER & SONS, OF SAME PLACE.

SPINDLE-SUPPORT.

SPECIFICATION forming part of Letters Patent No. 484,356, dated October 11, 1892.

Application filed June 6, 1892. Serial No. 435,623. (No model.)

To all whom it may concern.-

Be it known that LWILLIAM F. DRAPER, of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Spindle-Supports, of which the following description, in connection with the accompanying drawings,is a specification, like letters on the drawings representing like parts'.

This invention has for its object to improve ro that class of spindles wherein the tapered lower end of the spindle fits the tapered interior of a bolster-bearing. In this class of spindles provision has been made to allow the fit of the spindle to the bolster-bearing to r 5 be changed by raising or lowering the tapered bolster with relation to a fixed step. I-Ieretofore the step has been screwed into the bolster; but to make the adjustment the spindle .has had to be removed and tools applied to zo the bolster, requiring considerable time. To simplify this operation, I have prolonged the shank of the step, which is screwed into the bolster, down below the shank of the bolstercase, and have attached to said step a nut, 2 5 which is screwed onto the bolster-.case shank, so that by rotating said nut the step may be screwed into the lower end of the bolster, and as the latter cannot rotate with the step it is compelled to change its position with relation 3o to it.

Figure l, in partial vertical section and elevation, represents a structure embodying my invention; and Fig. 2, a section on the line l A is a spindle having a tapering lower end or pintle and provided with a sleeve-whirl A2.

B is a supporting-case having an oil-reservoir B and a threaded shank B2, on which is a nut B3, by which to clamp the supporting- 4o case to the usual rail C. The supportingcase contains a loose bolster D, represented as surrounded by n yielding packing D', the said bolster being restrained by the pin or projection D2, entering a groove therein, from rotation with the spindle. The bolster is provided at its lower end with screw-threads to receive athreaded step a, connected to or forming part of the step-shank a', extended below the lower end of the bolster-case and having 5o suitably attached to it a step-nut dwhich engages screW-threads of the bolster-case, a check-nutb conning the step-nut in adjusted position. When the bolster becomes worn at its interior by the-friction thereon of the spin` dle, it is necessary, in order to preserve the 5 5 proper fit between the spindle and bolster,

to change the relative positions of the bolster and spindle longitudinally, and to enable the whirl to preserve its usual or established position I have made provision for lifting 6o the bolster to compensate for such wear, and this I effect in this present invention very easily and quickly by engaging the step-nut a2 and turning it in the direction to screw the step into the bolster-tube, and as the bolster-tube cannot rotate it must necessarily be moved vertically.

Having described my invention, what I claim,and desire to secure by Letters Patent, is- 7o l. A spindle-support consisting of a supporting-case and abolster mounted therein and restrained as against rotation with the spindle and threaded at its lower end, combined with a threaded step, a step-shank extended below the lower end of the supporting-case and having a step-nut attached thereto and adapted to engage screw-threads below the rail, to operate substantially as described.

2. A spindle-support consisting of a sup- 8o porting-case and a bolster mounted therein having a taper-bearing and boing capable of vertical adjustment with relation to a steppiece, and means to adjust said bolster while the spindle is running, substantially as described.

3. A spindle-support consisting of asupporting-caseandabolstermounted thereinand restrained as against rotation with the spindle and threaded at its lower end, combined 9o with a threaded step, a step-shank extended below the lower end ot the supporting-case and having a step-nut attached thereto and adapted to engage screw-threads below the rail, and a check nut to hold said step in 95 position, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

WILLIAM F. DRAPER. Witnesses:

FRANK J. DUTGHER, GEORGE E. STIMPsoN. 

